Curve ball time; Mary Poppins. I just turn into a glee filled 6 year old every time I see that. Julie Andrews + Dick Van Dyke = Magic.
In saying that, Aladdin and Lion King are two of my favourites, both are funny, great VAs and beautiful just to look at.
As for Pixar movies, Toy Story(s) and Up and are also in my Top 10. One of the few movies to make me cry like a baby. for Up, I had a tissue in my hand from start to finish, and the last half hour of Toy Story 3, was painful, but brilliantly so (partly because I am/was the exact age as Andy and going through the same experiences as him).
Honourable mention; The Fox and The Hound. that's the movie that got me enamoured with animals. When I eventually get a couple of dogs, I'm so naming them Todd and Copper.